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  #11  
Old 01-20-2020, 01:19 PM
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N729LS N729LS is offline
 
Join Date: Apr 2015
Location: Mesa, AZ
Posts: 155
Default Better DynaVibe Results

I have to take exception to saying that some planes cannot be brought to better than 0.1 IPS RMS using a DynaVibe. I used to use an ACES system for balancing, but was gifted a low-end DynaVibe unit.

The basic differences between the cheaper and more expensive DynaVibe units, or the ACES unit, are the balancing software and the convenient memory. Fortunately (?) I am a mechanical engineer, so I wrote my own software in Excel to support the balancing process using the cheaper unit.

Anyway, I guarantee a final value of 0.07 IPS or better, but for most RV's I can get into the 0.03 range! Heck, I've even gotten CJ-6s down to that! And - (Blatant Commercialism Warning) - I offer a discount to EAA members that can come to KFFZ for the balance.

FWIW,
Andy Elliott
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  #12  
Old 01-20-2020, 02:42 PM
JDA_BTR JDA_BTR is offline
 
Join Date: Dec 2013
Location: Baton Rouge, LA
Posts: 917
Default

When a magnitude made sense I made that assumption. The math works well overall. Itís not a recent paper but the theory is sound.

I didnít say you cant get to less that 0.1 with a dynavibe. Iím at 0.03. With any instrument accuracy at low amplitude is reduced. It just is a little more trial and error at low amplitude in my experience.
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  #13  
Old 01-20-2020, 06:29 PM
Kuhtenia Kuhtenia is offline
 
Join Date: Jan 2018
Location: Galena, Ohio
Posts: 17
Default DynaVibe-Related Podcast

The crew over at Sonex Flight podcast just posted a new episode specifically related to use of the DynaVibe, including common issues, a long chat with the factory rep, etc.

Definitely recommend a listen - http://sonexflight.com/66/index.html
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